Astronomers have observed a star before it became a nova.
Fading Star
Epsilon Aurigae dims every 27 years. It’s still a bit of a mystery why.
From Many, One
By studying millions of stars we can learn the story of our own Sun.
Big Planet Discovered Around A Very Young Star
A planet larger than Jupiter has been detected around an extremely young star.
The Gilded Age
The collision of neutron stars causes a galaxy to enter a gilded age.
Mystery Of The Largest Stars
The most popular view has been that such supermassive stars form when two large stars collide, but new observations cast doubt on that model.
Young Star, Young Planet
HL Tau is a young star, only about a million years old. Despite its young age, the star is already busy at making a family.
How Large Can A Solar System Be?
A new discovery raises an interesting question about just how large a planetary system could be.
Could You Build A Helium Star?
Building a star isn’t simply a matter of gathering enough mass. The type of matter you use greatly affects the behavior of your star.